gets the value of the prefix property . concode_field_sep String number concode_elem_sep ShelvingOrder shelvingOrder concode_elem_sep String prefix concode_elem_sep CallNumberType callNumberType concode_field_sep String getNumber concode_elem_sep ShelvingOrder getShelvingOrder concode_elem_sep void setCallNumberType concode_elem_sep void setPrefix concode_elem_sep CallNumberType getCallNumberType concode_elem_sep void setShelvingOrder concode_elem_sep void setNumber
String function ( ) { return prefix ; }