@Nonnull
	protected MappingKey getFieldKey(@Nonnull String ownerName, @Nonnull String fieldName, @Nullable String fieldDesc) {
		return new FieldMappingKey(ownerName, fieldName, supportFieldTypeDifferentiation ? fieldDesc : null);
	}
@param ownerName
		Class defining the field.
@param fieldName
		Name of field.
@param fieldDesc
		Type descriptor of field.

@return Key format for field.
recaf-core/src/main/java/software/coley/recaf/services/mapping/MappingsAdapter.java