code: function addFilteredParameterMethod() {
          $methodGenerator = new MethodGenerator('getFilteredParameter');
          $body = 'if (array_key_exists($name, $this->parameters) == false) {'.PHP_EOL;
          //TODO - make this be the correct type
          $body .= '    throw new \Exception(\'Parameter \'.$name.\' does not exist.\');'.PHP_EOL;
          $body .= '}'.PHP_EOL;
          $body .= ''.PHP_EOL;
          $body .= '$value = $this->parameters[$name];'.PHP_EOL;
          $body .= ''.PHP_EOL;
          
          $paramFilterBlocks = [];
  
          foreach ($this->operationDefinition->getParameters() as $parameter) {
              $parameterFilters = $parameter->getFilters();
              
              if (count($parameterFilters)) {
                  //Only generate the filter block if a filter actually need to be applied
                  $paramFilterBlocks[] = $this->generateParamFilterBlock($parameter);
              }
          }
          
          if (count($paramFilterBlocks)) {
              $body .= 'switch ($name) {'.PHP_EOL;
              $body .= ''.PHP_EOL;
              foreach ($paramFilterBlocks as $paramFilterBlock) {
                  $body .= $paramFilterBlock.PHP_EOL;
                  $body .= ''.PHP_EOL;
              }
              $body .= '    default:{}'.PHP_EOL;
              $body .= ''.PHP_EOL;
              $body .= '}'.PHP_EOL;
          }
  
          $body .= ''.PHP_EOL;
          $body .= 'return $value;'.PHP_EOL;
          
          $methodGenerator->setBody($body);
          $docBlock = $this->generateExecuteDocBlock('Apply any filters necessary to the parameter');
  
          $parameterGenerator = new ParameterGenerator('name', 'string');
          
          $methodGenerator->setParameter($parameterGenerator);
  
          $tag = createParamTag($parameterGenerator, "The name of the parameter to get.");
          $docBlock->setTag($tag);
          
          $methodGenerator->setDocBlock($docBlock);
          $this->classGenerator->addMethodFromGenerator($methodGenerator);
  
      }
docs: Add a method to get a parameter of this operation after it has been filtered.
  @throws APIBuilderException