final function FieldMapper($name)
    {
        $fieldMappers = $this->FieldMappers();
        if (!array_key_exists($name, $fieldMappers))
            throw new \InvalidArgumentException($name . ' is not a field of ' . $this->TableName());
        
        return $fieldMappers[$name];
    }
final function FieldMapper($name)
    {
        $fieldMappers = $this->FieldMappers();
        if (!array_key_exists($name, $fieldMappers))
            throw new \InvalidArgumentException($name . ' is not a field of ' . $this->TableName());
        
        return $fieldMappers[$name];
    }
final function FieldMapper ( $ name ) { $ fieldMappers = $ this -> FieldMappers ( ) ; if ( ! array_key_exists ( $ name , $ fieldMappers ) ) throw new \ InvalidArgumentException ( $ name . ' is not a field of ' . $ this -> TableName ( ) ) ; return $ fieldMappers [ $ name ] ; }
Returns field mapper object for the given field name.
@param string $name
@return FieldMapper
@throws \Exception if field does not exist in this schema.
Returns field mapper object for the given field name .