construct a precondition by parsing the given if header as defined by section 9.4 in the webdav spec . concode_field_sep Vector conditions concode_field_sep Enumeration getConditions concode_elem_sep String toString concode_elem_sep void addCondition concode_elem_sep boolean matches concode_elem_sep void addStateTokenCondition
Precondition function ( String arg0 ) { return new Precondition ( arg0 ) ; }