PBC Yokozuna Schema Get
  
  
Fetch a search schema from Riak Search.
Request
In a request message, you only need to specify the name of the schema as
a binary (under name);
message RpbYokozunaSchemaGetReq {
    required bytes name  =  1;  // Schema name
}
Response
message RpbYokozunaSchemaGetResp {
  required RpbYokozunaSchema schema =  1;
}
The response message will include a RpbYokozunaSchema structure.
message RpbYokozunaSchema {
    required bytes name    =  1;
    optional bytes content =  2;
}
This message includes the schema name and its xml content.
