@Override
    public boolean hasColumnFamily(final byte[] familyName) {
      return families.containsKey(familyName);
    }
Checks to see if this table contains the given column family
@param familyName Family name or column name.
@return true if the table contains the specified family name
hbase-client/src/main/java/org/apache/hadoop/hbase/client/TableDescriptorBuilder.java