code: public Map<String, CFMetaData> getKeyspaceMetaData(String keyspaceName)
      {
          assert keyspaceName != null;
          KSMetaData ksm = keyspaces.get(keyspaceName);
          assert ksm != null;
          return ksm.cfMetaData();
      }
docs: Get metadata about keyspace inner ColumnFamilies
  
  @param keyspaceName The name of the keyspace
  
  @return metadata about ColumnFamilies the belong to the given keyspace