public GitPullRequest(string title, string description, GitBranch sourceBranch, GitBranch destinationBranch, Dictionary <GitUser, bool> reviewers)
 {
     Title             = title;
     Description       = description;
     SourceBranch      = sourceBranch;
     DestinationBranch = destinationBranch;
     Reviewers         = reviewers;
 }
 public GitPullRequest(string title, string description, GitBranch sourceBranch, GitBranch destinationBranch) :
     this(title, description, sourceBranch, destinationBranch, null)
 {
 }