public abstract Task<Stream> ReadFromFileAsync(
	string parentPath,
	string fileName
)

Public MustOverride Function ReadFromFileAsync ( 
	parentPath As String,
	fileName As String
) As Task(Of Stream)

public:
virtual Task<Stream^>^ ReadFromFileAsync(
	String^ parentPath, 
	String^ fileName
) abstract

abstract ReadFromFileAsync : 
        parentPath : string * 
        fileName : string -> Task<Stream>