### Question:
AttributeDescriptionFilter extends AbstractFilter { public static AttributeDescriptionFilter present( String attribute ) { return new AttributeDescriptionFilter( attribute ); } private  AttributeDescriptionFilter( String attribute ); static AttributeDescriptionFilter present( String attribute ); @Override StringBuilder build( StringBuilder builder );  }### Answer:
@Test public void testPresent() { assertEquals( "(objectClass=*)", AttributeDescriptionFilter.present( "objectClass" ).build().toString() ); assertEquals( "(uid=*)", AttributeDescriptionFilter.present( "uid" ).build().toString() ); assertEquals( "(userPassword=*)", AttributeDescriptionFilter.present( "userPassword" ).build().toString() ); assertEquals( "(cn=*)", AttributeDescriptionFilter.present( "cn" ).build().toString() ); }