set the context attribute key for the source attribute . concode_field_sep String toKey concode_elem_sep String value concode_elem_sep String fromKey concode_field_sep void setToKey concode_elem_sep String getValue concode_elem_sep void setValue concode_elem_sep String getToKey concode_elem_sep Message execute concode_elem_sep String getFromKey
void function ( String arg0 ) { this . fromKey = arg0 ; }