FileGetGroupInfoFunc - делегат

public delegate FileGroupInfo FileGetGroupInfoFunc(
	IFileGrouping grouping,
	IFileViewModel viewModel
)

Public Delegate Function FileGetGroupInfoFunc ( 
	grouping As IFileGrouping,
	viewModel As IFileViewModel
) As FileGroupInfo

public delegate FileGroupInfo FileGetGroupInfoFunc(
	IFileGrouping^ grouping, 
	IFileViewModel^ viewModel
)

type FileGetGroupInfoFunc = 
    delegate of 
        grouping : IFileGrouping * 
        viewModel : IFileViewModel -> FileGroupInfo