Metadata for SAI is a set of auto generated (based on SAI headers) data and functions which allow SAI attributes validation and more.
Metadata is generated as ANSI C source and header.
Parser also forces headers to be well formated when adding new code.
To test your changes just type:
[GEN_SAIRPC_OPTS=<option flags>] makee.g.
GEN_SAIRPC_OPTS="-ve" make