UnusedParameterSniff: Fixed false positive

Author: kukulich

SlevomatCodingStandard/Helpers/VariableHelper.php

@@ -86,7 +86,8 @@ public static function isUsedAsVariable(File $phpcsFile, int $variablePointer, i
 		}
 
 		if ($tokens[$variableToCheckPointer - 1]['code'] === T_DOUBLE_COLON) {
-			return false;
+			$pointerAfterVariable = TokenHelper::findNextEffective($phpcsFile, $variableToCheckPointer + 1);
+			return $tokens[$pointerAfterVariable]['code'] === T_OPEN_PARENTHESIS;
 		}
 
 		if (ParameterHelper::isParameter($phpcsFile, $variableToCheckPointer)) {

tests/Sniffs/Functions/data/unusedParameterNoErrors.php

@@ -73,5 +73,10 @@ public function setProperty(string $property, $value): void
 		$this->$property = $value;
 	}
 
+	private static function staticMethodCallViaVariable(string $methodName): ?self
+	{
+		return self::$methodName();
+	}
+
 }