public bool TryGet(Project project, out Entry entry)
{
if (project == null)
throw new ArgumentNullException("project");
return _configurations.TryGetValue(project, out entry);
}
public void Add(ProjectItem configurationItem, Configuration configuration)
{
if (configurationItem == null)
throw new ArgumentNullException("configurationItem");
if (configuration == null)
throw new ArgumentNullException("configuration");
var project = configurationItem.ContainingProject;
var entry = new Entry(configurationItem, configuration);
_configurations.Add(project, entry);
}