@Override
    public Employee build() {
      try {
        Employee record = new Employee();
        record.employeeName = fieldSetFlags()[0] ? this.employeeName : (java.lang.CharSequence) defaultValue(fields()[0]);
        record.employeeID = fieldSetFlags()[1] ? this.employeeID : (java.lang.Long) defaultValue(fields()[1]);
        record.age = fieldSetFlags()[2] ? this.age : (java.lang.Long) defaultValue(fields()[2]);
        record.gender = fieldSetFlags()[3] ? this.gender : (org.apache.hadoop.hive.hbase.avro.Gender) defaultValue(fields()[3]);
        record.contactInfo = fieldSetFlags()[4] ? this.contactInfo : (org.apache.hadoop.hive.hbase.avro.ContactInfo) defaultValue(fields()[4]);
        return record;
      } catch (Exception e) {
        throw new org.apache.avro.AvroRuntimeException(e);
      }
    }
Clears the value of the 'contactInfo' field
hbase-handler/src/test/org/apache/hadoop/hive/hbase/avro/Employee.java