diff --git a/phpmd.xml b/phpmd.xml
index 5424e30..e4bc82d 100644
--- a/phpmd.xml
+++ b/phpmd.xml
@@ -33,7 +33,7 @@
 
 	<rule ref="rulesets/naming.xml/ShortVariable">
 		<properties>
-			<property name="exceptions" value="a,b,i" />
+			<property name="exceptions" value="a,b,i,in" />
 		</properties>
 	</rule>
 	<rule ref="rulesets/naming.xml/ShortMethodName">
diff --git a/src/Application.php b/src/Application.php
index bff0153..8b83e5a 100644
--- a/src/Application.php
+++ b/src/Application.php
@@ -151,11 +151,13 @@ protected function findCommandByName(string $name):Command {
 		throw new InvalidCommandException($name);
 	}
 
+	/** @SuppressWarnings(PHPMD.ExitExpression) */
 	private function exit():void {
 		if(isset($this->exitHandler)) {
 			call_user_func($this->exitHandler, $this->exitCode);
 		}
 		elseif($this->exitCode !== 0) {
+			// phpcs:ignore
 			exit($this->exitCode);
 		}
 	}
diff --git a/src/Argument/ArgumentList.php b/src/Argument/ArgumentList.php
index e02dd30..b9e47a1 100644
--- a/src/Argument/ArgumentList.php
+++ b/src/Argument/ArgumentList.php
@@ -26,7 +26,10 @@ public function getCommandName():string {
 		return $this->argumentList[0]->getValue() ?? "";
 	}
 
-	/** @param string[] $arguments */
+	/**
+	 * @param string[] $arguments
+	 * @SuppressWarnings(PHPMD.CyclomaticComplexity)
+	 */
 	protected function buildArgumentList(array $arguments):void {
 		if(isset($arguments[0])
 		&& $arguments[0][0] !== "-") {
diff --git a/src/Argument/ArgumentValueListNotSetException.php b/src/Argument/ArgumentValueListNotSetException.php
index b5f078f..61f09af 100644
--- a/src/Argument/ArgumentValueListNotSetException.php
+++ b/src/Argument/ArgumentValueListNotSetException.php
@@ -3,4 +3,4 @@
 
 use Gt\Cli\CliException;
 
-class ArgumentValueListNotSetException extends CliException {}
\ No newline at end of file
+class ArgumentValueListNotSetException extends CliException {}
diff --git a/src/Argument/CommandArgument.php b/src/Argument/CommandArgument.php
index 2edb7c2..3e88941 100644
--- a/src/Argument/CommandArgument.php
+++ b/src/Argument/CommandArgument.php
@@ -6,7 +6,8 @@ public function __construct(string $commandName) {
 		parent::__construct("", $commandName);
 	}
 
+	// phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter
 	protected function processRawKey(string $rawKey): string {
 		return "";
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Argument/CommandArgumentList.php b/src/Argument/CommandArgumentList.php
index 54f9b90..3eb9c03 100644
--- a/src/Argument/CommandArgumentList.php
+++ b/src/Argument/CommandArgumentList.php
@@ -14,4 +14,4 @@ public function __construct(
 		);
 		parent::__construct($script, ...$commandArguments);
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Argument/DefaultArgumentValue.php b/src/Argument/DefaultArgumentValue.php
index 114cd7e..5bc5a94 100644
--- a/src/Argument/DefaultArgumentValue.php
+++ b/src/Argument/DefaultArgumentValue.php
@@ -6,4 +6,4 @@ public function __construct(?string $default) {
 		parent::__construct("__DEFAULT__");
 		$this->push($default);
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Argument/LongOptionArgument.php b/src/Argument/LongOptionArgument.php
index 7c34ef2..68dd29e 100644
--- a/src/Argument/LongOptionArgument.php
+++ b/src/Argument/LongOptionArgument.php
@@ -5,4 +5,4 @@ class LongOptionArgument extends Argument {
 	protected function processRawKey(string $rawKey):string {
 		return substr($rawKey, 2);
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Argument/NamedArgument.php b/src/Argument/NamedArgument.php
index c97ba54..865c206 100644
--- a/src/Argument/NamedArgument.php
+++ b/src/Argument/NamedArgument.php
@@ -6,6 +6,7 @@ public function __construct(string $value) {
 		parent::__construct("", $value);
 	}
 
+	// phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter
 	protected function processRawKey(string $rawKey): string {
 		return "";
 	}
diff --git a/src/Argument/NamedArgumentValue.php b/src/Argument/NamedArgumentValue.php
index cfc78d2..a3eaba4 100644
--- a/src/Argument/NamedArgumentValue.php
+++ b/src/Argument/NamedArgumentValue.php
@@ -1,4 +1,4 @@
 <?php
 namespace Gt\Cli\Argument;
 
-class NamedArgumentValue extends ArgumentValue {}
\ No newline at end of file
+class NamedArgumentValue extends ArgumentValue {}
diff --git a/src/Argument/NotEnoughArgumentsException.php b/src/Argument/NotEnoughArgumentsException.php
index e66c085..bbd2527 100644
--- a/src/Argument/NotEnoughArgumentsException.php
+++ b/src/Argument/NotEnoughArgumentsException.php
@@ -7,4 +7,4 @@ class NotEnoughArgumentsException extends CliException {
 	public function __construct(string $message) {
 		parent::__construct("Not enough arguments passed. $message.");
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Argument/ShortOptionArgument.php b/src/Argument/ShortOptionArgument.php
index 230ffa1..b649743 100644
--- a/src/Argument/ShortOptionArgument.php
+++ b/src/Argument/ShortOptionArgument.php
@@ -12,4 +12,4 @@ protected function processRawKey(string $rawKey):string {
 
 		return $key;
 	}
-}
\ No newline at end of file
+}
diff --git a/src/CliException.php b/src/CliException.php
index 0415934..7091b06 100644
--- a/src/CliException.php
+++ b/src/CliException.php
@@ -4,6 +4,7 @@
 use RuntimeException;
 
 class CliException extends RuntimeException {
+	/** @SuppressWarnings(PHPMD.StaticAccess) */
 	public function __construct(string $message) {
 		$code = ErrorCode::get(get_class($this));
 
@@ -12,4 +13,4 @@ public function __construct(string $message) {
 			$code
 		);
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Command/Command.php b/src/Command/Command.php
index 9677d0b..b662246 100644
--- a/src/Command/Command.php
+++ b/src/Command/Command.php
@@ -14,6 +14,7 @@
 use Gt\Cli\Parameter\UserParameter;
 use Gt\Cli\Stream;
 
+/** @SuppressWarnings(PHPMD.ExcessiveClassComplexity) */
 abstract class Command {
 	protected ?Stream $stream;
 
@@ -40,129 +41,17 @@ abstract public function getRequiredParameterList():array;
 	abstract public function getOptionalParameterList():array;
 
 	public function getUsage(bool $includeDocumentation = false):string {
-		$message = "";
-
-		$message .= "Usage: ";
+		$message = "Usage: ";
 		$message .= $this->getName();
 
 		$documentation = [];
 
-		foreach($this->getRequiredNamedParameterList() as $parameter) {
-			$message .= " ";
-			$message .= $parameter->getOptionName();
-
-			$paramDocumentation = $parameter->getDocumentation();
-			if(!empty($paramDocumentation)) {
-				$documentation[$parameter->getOptionName()] =
-					$paramDocumentation;
-			}
-		}
-
-		foreach($this->getOptionalNamedParameterList() as $parameter) {
-			$message .= " [";
-			$message .= $parameter->getOptionName();
-			$message .= "]";
-
-			$paramDocumentation = $parameter->getDocumentation();
-			if(!empty($paramDocumentation)) {
-				$documentation[$parameter->getOptionName()] =
-					"(Optional) " . $paramDocumentation;
-			}
-		}
-
-		foreach($this->getRequiredParameterList() as $parameter) {
-			$message .= " --";
-			$message .= $parameter->getLongOption();
-
-			if($short = $parameter->getShortOption()) {
-				$message .= "|-$short";
-			}
-
-			if($parameter->takesValue()) {
-				$message .= " ";
-				$message .= $parameter->getExampleValue();
-			}
-
-			$paramDocumentation = $parameter->getDocumentation();
-			if(!empty($paramDocumentation)) {
-				$paramDocumentationKey = "--" . $parameter->getLongOption();
-				if($short) {
-					$paramDocumentationKey .= "|-" . $short;
-				}
-				$documentation[$paramDocumentationKey] =
-					$paramDocumentation;
-			}
-		}
-
-		foreach($this->getOptionalParameterList() as $parameter) {
-			$message .= " [--";
-			$message .= $parameter->getLongOption();
-
-			if($short = $parameter->getShortOption()) {
-				$message .= "|-$short";
-			}
-
-			if($parameter->takesValue()) {
-				$message .= " ";
-				$message .= $parameter->getExampleValue();
-			}
-
-			$message .= "]";
-
-			$paramDocumentation = $parameter->getDocumentation();
-			if(!empty($paramDocumentation)) {
-				$paramDocumentationKey = "--" . $parameter->getLongOption();
-				if($short) {
-					$paramDocumentationKey .= "|-" . $short;
-				}
-				$documentation[$paramDocumentationKey] =
-					"(Optional) " . $paramDocumentation;
-			}
-		}
-
-		if($includeDocumentation
-		&& !empty($documentation)) {
-			$message .= PHP_EOL;
-			$message .= PHP_EOL;
-
-			foreach($documentation as $key => $docString) {
-				$wrappedDocs = wordwrap($docString, 55);
-				$wrappedDocs = explode("\n", $wrappedDocs);
-				foreach($wrappedDocs as $i => $line) {
-					if($i === 0) {
-						continue;
-					}
-
-					$wrappedDocs[$i] = "\t\t\t" . $line;
-				}
-				$wrappedDocs = implode("\n", $wrappedDocs);
-
-				if(!strstr($key, "-")) {
-					$message .= str_repeat(" ", 6);
-					$message .= $key;
-					$message .= "\t\t";
-					$message .= $wrappedDocs;
-					$message .= PHP_EOL;
-				}
-				else {
-					$keyParts = explode("|", $key);
-					$message .= str_repeat(" ", 2);
-					if(isset($keyParts[1])) {
-						$message .= $keyParts[1];
-						$message .= ", ";
-					}
-
-					$message .= $keyParts[0];
-					if(!isset($keyParts[1])) {
-						$message .= str_repeat(" ", 3);
-					}
-
-					$message .= "\t\t";
-					$message .= $wrappedDocs;
-
-					$message .= PHP_EOL;
-				}
-			}
+		$this->appendUsageRequiredNamedParameterList($message, $documentation);
+		$this->appendUsageOptionalNamedParameterList($message, $documentation);
+		$this->appendUsageRequiredParameterList($message, $documentation);
+		$this->appendUsageOptionalParameterList($message, $documentation);
+		if($includeDocumentation && !empty($documentation)) {
+			$this->appendDocumentation($message, $documentation);
 		}
 
 		return $message;
@@ -176,7 +65,7 @@ public function checkArguments(ArgumentList $argumentList):void {
 		$passedNamedArguments = 0;
 		foreach($argumentList as $argument) {
 			if($argument instanceof NamedArgument) {
-				$passedNamedArguments ++;
+				$passedNamedArguments++;
 			}
 		}
 
@@ -207,6 +96,7 @@ public function checkArguments(ArgumentList $argumentList):void {
 		}
 	}
 
+	/** @SuppressWarnings(PHPMD.CyclomaticComplexity) */
 	public function getArgumentValueList(
 		ArgumentList $arguments
 	):ArgumentValueList {
@@ -260,7 +150,7 @@ public function getArgumentValueList(
 					|| $argumentKey === $parameterToCheck->getShortOption()) {
 						$parameter = $parameterToCheck;
 						break;
-					};
+					}
 				}
 
 				if(is_null($parameter)) {
@@ -312,4 +202,149 @@ protected function readLine(string $default = null):string {
 		}
 		return trim($line) ?: $default ?? "";
 	}
+
+	/** @param array<string, string> $documentation */
+	private function appendUsageRequiredNamedParameterList(
+		string &$message,
+		array &$documentation,
+	):void {
+		foreach($this->getRequiredNamedParameterList() as $parameter) {
+			$message .= " ";
+			$message .= $parameter->getOptionName();
+
+			$paramDocumentation = $parameter->getDocumentation();
+			if(!empty($paramDocumentation)) {
+				$documentation[$parameter->getOptionName()] =
+					$paramDocumentation;
+			}
+		}
+	}
+
+	/** @param array<string, string> $documentation */
+	private function appendUsageOptionalNamedParameterList(
+		string &$message,
+		array &$documentation,
+	):void {
+		foreach($this->getOptionalNamedParameterList() as $parameter) {
+			$message .= " [";
+			$message .= $parameter->getOptionName();
+			$message .= "]";
+
+			$paramDocumentation = $parameter->getDocumentation();
+			if(!empty($paramDocumentation)) {
+				$documentation[$parameter->getOptionName()] =
+					"(Optional) " . $paramDocumentation;
+			}
+		}
+	}
+
+	/** @param array<string, string> $documentation */
+	private function appendUsageRequiredParameterList(
+		string &$message,
+		array &$documentation,
+	):void {
+		foreach($this->getRequiredParameterList() as $parameter) {
+			$message .= " --";
+			$message .= $parameter->getLongOption();
+
+			if($short = $parameter->getShortOption()) {
+				$message .= "|-$short";
+			}
+
+			if($parameter->takesValue()) {
+				$message .= " ";
+				$message .= $parameter->getExampleValue();
+			}
+
+			$paramDocumentation = $parameter->getDocumentation();
+			if(!empty($paramDocumentation)) {
+				$paramDocumentationKey = "--" . $parameter->getLongOption();
+				if($short) {
+					$paramDocumentationKey .= "|-" . $short;
+				}
+				$documentation[$paramDocumentationKey] =
+					$paramDocumentation;
+			}
+		}
+	}
+
+	/** @param array<string, string> $documentation */
+	private function appendUsageOptionalParameterList(
+		string &$message,
+		array &$documentation,
+	):void {
+		foreach($this->getOptionalParameterList() as $parameter) {
+			$message .= " [--";
+			$message .= $parameter->getLongOption();
+
+			if($short = $parameter->getShortOption()) {
+				$message .= "|-$short";
+			}
+
+			if($parameter->takesValue()) {
+				$message .= " ";
+				$message .= $parameter->getExampleValue();
+			}
+
+			$message .= "]";
+
+			$paramDocumentation = $parameter->getDocumentation();
+			if(!empty($paramDocumentation)) {
+				$paramDocumentationKey = "--" . $parameter->getLongOption();
+				if($short) {
+					$paramDocumentationKey .= "|-" . $short;
+				}
+				$documentation[$paramDocumentationKey] =
+					"(Optional) " . $paramDocumentation;
+			}
+		}
+	}
+
+	/** @param array<string, string> $documentation */
+	private function appendDocumentation(
+		string &$message,
+		array &$documentation,
+	):void {
+		$message .= PHP_EOL;
+		$message .= PHP_EOL;
+
+		foreach($documentation as $key => $docString) {
+			$wrappedDocs = wordwrap($docString, 55);
+			$wrappedDocs = explode("\n", $wrappedDocs);
+			foreach($wrappedDocs as $i => $line) {
+				if($i === 0) {
+					continue;
+				}
+
+				$wrappedDocs[$i] = "\t\t\t" . $line;
+			}
+			$wrappedDocs = implode("\n", $wrappedDocs);
+
+			if(!strstr($key, "-")) {
+				$message .= str_repeat(" ", 6);
+				$message .= $key;
+				$message .= "\t\t";
+				$message .= $wrappedDocs;
+				$message .= PHP_EOL;
+			}
+			else {
+				$keyParts = explode("|", $key);
+				$message .= str_repeat(" ", 2);
+				if(isset($keyParts[1])) {
+					$message .= $keyParts[1];
+					$message .= ", ";
+				}
+
+				$message .= $keyParts[0];
+				if(!isset($keyParts[1])) {
+					$message .= str_repeat(" ", 3);
+				}
+
+				$message .= "\t\t";
+				$message .= $wrappedDocs;
+
+				$message .= PHP_EOL;
+			}
+		}
+	}
 }
diff --git a/src/Command/CommandException.php b/src/Command/CommandException.php
index 493ae75..106454c 100644
--- a/src/Command/CommandException.php
+++ b/src/Command/CommandException.php
@@ -3,4 +3,4 @@
 
 use Gt\Cli\CliException;
 
-class CommandException extends CliException {}
\ No newline at end of file
+class CommandException extends CliException {}
diff --git a/src/Command/HelpCommand.php b/src/Command/HelpCommand.php
index c7314e9..dc15c5a 100644
--- a/src/Command/HelpCommand.php
+++ b/src/Command/HelpCommand.php
@@ -117,7 +117,8 @@ protected function getHelpForAllCommands():string {
 		}
 
 		$output .= PHP_EOL;
-		$output .= "Type `{$this->scriptName} help COMMAND` to get help for that command.";
+		$output .= "Type `{$this->scriptName} help COMMAND` "
+			. "to get help for that command.";
 		return $output;
 	}
 
diff --git a/src/Command/InvalidCommandException.php b/src/Command/InvalidCommandException.php
index ad1cfa1..551e65f 100644
--- a/src/Command/InvalidCommandException.php
+++ b/src/Command/InvalidCommandException.php
@@ -7,4 +7,4 @@ class InvalidCommandException extends CliException {
 	public function __construct(string $message) {
 		parent::__construct("Invalid command: \"$message\"");
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Command/VersionCommand.php b/src/Command/VersionCommand.php
index e7419ae..0d77f87 100644
--- a/src/Command/VersionCommand.php
+++ b/src/Command/VersionCommand.php
@@ -7,12 +7,9 @@
 use Gt\Cli\Parameter\Parameter;
 
 class VersionCommand extends Command {
+	// phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter
 	public function run(ArgumentValueList $arguments = null):void {
-		$this->writeLine(
-			$this->getVersion($arguments?->get(
-				"command"
-			)
-		));
+		$this->writeLine($this->getVersion());
 	}
 
 	public function getName():string {
@@ -43,7 +40,8 @@ public function getOptionalParameterList():array {
 		return [];
 	}
 
-	protected function getVersion(string $command = null):string {
+	/** @SuppressWarnings(PHPMD.StaticAccess) */
+	protected function getVersion():string {
 		$package = InstalledVersions::getRootPackage()["name"];
 		return InstalledVersions::getVersion($package) ?? "";
 	}
diff --git a/src/InvalidStreamNameException.php b/src/InvalidStreamNameException.php
index 954bab3..b2b18da 100644
--- a/src/InvalidStreamNameException.php
+++ b/src/InvalidStreamNameException.php
@@ -3,4 +3,4 @@
 
 use RuntimeException;
 
-class InvalidStreamNameException extends RuntimeException {}
\ No newline at end of file
+class InvalidStreamNameException extends RuntimeException {}
diff --git a/src/Parameter/MissingRequiredParameterException.php b/src/Parameter/MissingRequiredParameterException.php
index 9f33c92..77e4059 100644
--- a/src/Parameter/MissingRequiredParameterException.php
+++ b/src/Parameter/MissingRequiredParameterException.php
@@ -3,4 +3,4 @@
 
 use Gt\Cli\CliException;
 
-class MissingRequiredParameterException extends CliException {}
\ No newline at end of file
+class MissingRequiredParameterException extends CliException {}
diff --git a/src/Parameter/MissingRequiredParameterValueException.php b/src/Parameter/MissingRequiredParameterValueException.php
index a5b27c9..b212f1d 100644
--- a/src/Parameter/MissingRequiredParameterValueException.php
+++ b/src/Parameter/MissingRequiredParameterValueException.php
@@ -3,4 +3,4 @@
 
 use Gt\Cli\CliException;
 
-class MissingRequiredParameterValueException extends CliException {}
\ No newline at end of file
+class MissingRequiredParameterValueException extends CliException {}
diff --git a/src/Parameter/NamedParameter.php b/src/Parameter/NamedParameter.php
index d2b5e2f..1524e53 100644
--- a/src/Parameter/NamedParameter.php
+++ b/src/Parameter/NamedParameter.php
@@ -10,4 +10,4 @@ public function __construct(string $optionName) {
 	public function getOptionName():string {
 		return $this->longOption;
 	}
-}
\ No newline at end of file
+}
diff --git a/src/Parameter/UserParameter.php b/src/Parameter/UserParameter.php
index 7f8c97e..3d56096 100644
--- a/src/Parameter/UserParameter.php
+++ b/src/Parameter/UserParameter.php
@@ -1,14 +1,4 @@
 <?php
 namespace Gt\Cli\Parameter;
 
-class UserParameter extends Parameter {
-	public function __construct(
-		bool $takesValue,
-		string $longOption
-	) {
-		parent::__construct(
-			$takesValue,
-			$longOption
-		);
-	}
-}
\ No newline at end of file
+class UserParameter extends Parameter {}
diff --git a/test/phpunit/Argument/ArgumentListTest.php b/test/phpunit/Argument/ArgumentListTest.php
index cca46e5..9cf63c4 100644
--- a/test/phpunit/Argument/ArgumentListTest.php
+++ b/test/phpunit/Argument/ArgumentListTest.php
@@ -328,7 +328,7 @@ public function testGetValueForParameterForMultiple() {
 		self::assertTrue($argumentList->contains($param4));
 	}
 
-	public function data_randomNamedArgs():array {
+	public static function data_randomNamedArgs():array {
 		$dataSet = [];
 
 		for($i = 0; $i < 10; $i++) {
@@ -352,7 +352,7 @@ public function data_randomNamedArgs():array {
 		return $dataSet;
 	}
 
-	public function data_randomLongArgs():array {
+	public static function data_randomLongArgs():array {
 		$dataSet = [];
 
 		for($i = 0; $i < 10; $i++) {
@@ -381,7 +381,7 @@ public function data_randomLongArgs():array {
 		return $dataSet;
 	}
 
-	public function data_randomShortArgs():array {
+	public static function data_randomShortArgs():array {
 		$dataSet = [];
 
 		for($i = 0; $i < 10; $i++) {
@@ -410,7 +410,7 @@ public function data_randomShortArgs():array {
 		return $dataSet;
 	}
 
-	public function data_randomLongEqualsArgs():array {
+	public static function data_randomLongEqualsArgs():array {
 		$dataSet = [];
 
 		for($i = 0; $i < 10; $i++) {
@@ -430,7 +430,7 @@ public function data_randomLongEqualsArgs():array {
 		return $dataSet;
 	}
 
-	public function data_randomShortEqualsArgs():array {
+	public static function data_randomShortEqualsArgs():array {
 		$dataSet = [];
 
 		for($i = 0; $i < 10; $i++) {
@@ -455,4 +455,4 @@ public function data_randomShortEqualsArgs():array {
 
 		return $dataSet;
 	}
-}
\ No newline at end of file
+}