FileOrDirectoryExistsConstraint
FileOrDirectoryExistsConstraint is used to determine if a file or directory exists
If true, the constraint will only check if files exist, not directories
If true, the constraint will only check if directories exist, not files
public FileOrDirectoryExistsConstraint()
Initializes a new instance of the FileOrDirectoryExistsConstraint class that
will check files and directories.
Initializes a new instance of the FileOrDirectoryExistsConstraint class that
will only check files if ignoreDirectories is true.