original_string: public function HasField ($fieldOrFieldName = NULL) {
  		$fieldName = NULL;
  		if ($fieldOrFieldName instanceof \MvcCore\Ext\Forms\IField) {
  			$fieldName = $fieldOrFieldName->GetName();
  		} else if (is_string($fieldOrFieldName)) {
  			$fieldName = $fieldOrFieldName;
  		}
  		return isset($this->fields[$fieldName]);
  	}
code: public function HasField ($fieldOrFieldName = NULL) {
  		$fieldName = NULL;
  		if ($fieldOrFieldName instanceof \MvcCore\Ext\Forms\IField) {
  			$fieldName = $fieldOrFieldName->GetName();
  		} else if (is_string($fieldOrFieldName)) {
  			$fieldName = $fieldOrFieldName;
  		}
  		return isset($this->fields[$fieldName]);
  	}
code_tokens: public function HasField ( $ fieldOrFieldName = NULL ) { $ fieldName = NULL ; if ( $ fieldOrFieldName instanceof \ MvcCore \ Ext \ Forms \ IField ) { $ fieldName = $ fieldOrFieldName -> GetName ( ) ; } else if ( is_string ( $ fieldOrFieldName ) ) { $ fieldName = $ fieldOrFieldName ; } return isset ( $ this -> fields [ $ fieldName ] ) ; }
docstring: If `TRUE` if given field instance or given
  field name exists in form, `FALSE` otherwise.
  @param \MvcCore\Ext\Forms\IField|string $fieldOrFieldName
  @return bool
docstring_tokens: If TRUE if given field instance or given field name exists in form FALSE otherwise .