How can I use 'Public share function' in Visual Basic 2010 with Measurement studio？Thank you!

[VisualBasic]

For example
Public Shared Function AutoCorrelate ( inputData As Double() ) As Double()
In the example given in Measurement Studio 2010,when my mouse stop on "AutoCorrelate",I can see:

"Public Shared Function AutoCorrelate ( inputData As Double() ) As Double()"
But how can I creat it?Please help me!Better with an example.Thanks!!!!