title: How do I fix the error "Can not access internal class" error in C#?
body: <p>I am pretty much using existing code to create a new class in a new file. I am using existing code to create a test class. One of the declarations does not compile and gives me a red warning in Resharper stating:</p>
  
  <blockquote>
    <p>Cannot access internal class "..." here.</p>
  </blockquote>
  
  <p>I am using the namespace where the class is defined. What else am I missing?</p>