public DozerField getSrcFieldCopy() {
        try {
            return (DozerField)srcField.clone();
        } catch (CloneNotSupportedException e) {
            throw new MappingException(e);
        }
    }
Return true if is self referencing. Is considered self referencing where no other sources are specified,
i.e., no source properties or #CDATA in the xml def.

@return true if is self referencing
core/src/main/java/com/github/dozermapper/core/fieldmap/FieldMap.java