code: func NewMockFilesystem(files []string) *MockFilesystem {
  	m := &MockFilesystem{
  		Files: make(map[string]*MockFile),
  	}
  
  	for i := range files {
  		m.Add(files[i])
  	}
  
  	return m
  }
docs: // NewMockFilesystem returns a new MockFilesystem given a list of file paths