Create a new ISpecification<(Of <(<'TCandidate>)>)> that evaluates the other 
            only if the current specification is satisfied.
            
Assembly: Epic.Prelude
Declaration Syntax
| C# | 
ISpecification<TCandidate> And( ISpecification<TCandidate> other )
Parameters
- other (ISpecification<(Of <(<'TCandidate>)>)>)
 - The other specification to evaluate.
 
Return Value
A new ISpecification<(Of <(<'TCandidate>)>)> that evaluates the other 
            only if the current specification is satisfied.
Exceptions
| Exception | Condition | 
|---|---|
| ArgumentNullException | other is nullNothingnullptr. | 
