Some applications or frameworks can operate against MBOs generically by invoking MBO operations without prior knowledge of MBO classes. This can be achieved by using the MetaData API.
These APIs allow retrieving the metadata of packages, MBOs, attributes, operations, and parameters during runtime.
You can generate metadata classes using the –md code generation option. You can also generate metadata classes by selecting the option Generate metadata classes in the code generation wizard in the mobile application project.