get the relative file name of the attachment . this should not include any path information . concode_field_sep Object view concode_elem_sep Disposition disposition concode_elem_sep String name concode_field_sep Object view concode_elem_sep Disposition disposition concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String contentId concode_elem_sep boolean isInline
String function ( ) { return name ; }