MarcXmlReader
DataField.addSubfield(Subfield)
DataField.getFirstSubfield(char)
DataField.getSubfields()
DataField.setSubfields(List)
Record(org.marc4j.marc.Record)
Record.getControlFields()
Record.getFirstDataField(String)
Record.getDataFields()
Record.getVariableFields()
#setControlFields(List)
#setDataFields(List)
#setVariableFields(List)
VariableField(VariableField)
MarcWriter.setCharacterConverter(CharacterConverter charconv)