public Get addFamily(byte[] family) {
    familyMap.remove(family);
    familyMap.put(family, null);
    return this;
  }
Get all columns from the specified family.
<p>
Overrides previous calls to addColumn for this family.
@param family family name
@return the Get object
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Get.java