noop means no operation

It could be spelled no op or no-op too I guess.

• http://tom-jaeschke.blogspot.com/2011/11/noop.html
• http://tom-jaeschke.blogspot.com/2012/01/potential-linqspecs-antipattern-with.html
• http://tom-jaeschke.blogspot.com/2011/12/current-way-we-aggregate-linqspecs.html