@Nonnull
	@Override
	public String getOwnerName() {
		return ownerName;
	}
@param ownerName
		Name of class defining the field.
@param oldName
		Pre-mapping field name.
@param desc
		Descriptor type of the field.
		May be {@code null} since not all formats use it.
@param newName
		Post-mapping field name.
recaf-core/src/main/java/software/coley/recaf/services/mapping/data/FieldMapping.java