question: return the qualifier set to this object . null if nothing is set concode_field_sep String schema concode_elem_sep String qualifier concode_elem_sep String element concode_field_sep int hashCode concode_elem_sep String getElement concode_elem_sep boolean equals concode_elem_sep void setQualifier concode_elem_sep String getField concode_elem_sep String toString concode_elem_sep void setElement concode_elem_sep void setSchema concode_elem_sep String getSchema
target: String function ( ) { return qualifier ; }