public FilterDefinition<TDocument> GeoWithinCenter(
	Expression<Func<TDocument, Object>> field,
	double x,
	double y,
	double radius
)

Public Function GeoWithinCenter ( 
	field As Expression(Of Func(Of TDocument, Object)),
	x As Double,
	y As Double,
	radius As Double
) As FilterDefinition(Of TDocument)

member GeoWithinCenter : 
        field : Expression<Func<'TDocument, Object>> * 
        x : float * 
        y : float * 
        radius : float -> FilterDefinition<'TDocument>