public void addToMutations(Mutation elem) {
      if (this.mutations == null) {
        this.mutations = new java.util.ArrayList<Mutation>();
      }
      this.mutations.add(elem);
    }
Returns true if field row is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/generated/Hbase.java