gets the value of the reference property . objects of the following type s are allowed in the list referencetype concode_field_sep CanonicalizationMethodType canonicalizationMethod concode_elem_sep List<ReferenceType> reference concode_elem_sep SignatureMethodType signatureMethod concode_elem_sep String id concode_field_sep void add concode_elem_sep void setCanonicalizationMethod concode_elem_sep SignatureMethodType getSignatureMethod concode_elem_sep CanonicalizationMethodType getCanonicalizationMethod concode_elem_sep void setId concode_elem_sep String getId concode_elem_sep void setSignatureMethod concode_elem_sep void remove
List < ReferenceType > function ( ) { return Collections . unmodifiableList ( this . reference ) ; }