getFieldTypeIdentifier() public method

Returns the field type identifier for this field type.
public getFieldTypeIdentifier ( ) : string
return string
 /**
  * Adds the given $fieldType.
  *
  * Note, this is not an API method and not meant to be used directly!
  *
  * @param FieldType $fieldType
  */
 public function addFieldType(FieldType $fieldType)
 {
     $this->fieldTypes[$fieldType->getFieldTypeIdentifier()] = $fieldType;
 }