From the proxy, return an ISourcePoint for the specified quantity.
It returns the first quantity of that type that is offered, and null if the quantity is not offered.
public static ISourcePoint SourcePoint(
this ISourcePointProxy proxy,
IQuantity quantity
)[Missing <param name="proxy"/> documentation for "M:DHI.Mike1D.Engine.SourceProxyExtensions.SourcePoint(DHI.Mike1D.Engine.ISourcePointProxy,DHI.Mike1D.Generic.IQuantity)"]
[Missing <param name="quantity"/> documentation for "M:DHI.Mike1D.Engine.SourceProxyExtensions.SourcePoint(DHI.Mike1D.Engine.ISourcePointProxy,DHI.Mike1D.Generic.IQuantity)"]
[Missing <returns> documentation for "M:DHI.Mike1D.Engine.SourceProxyExtensions.SourcePoint(DHI.Mike1D.Engine.ISourcePointProxy,DHI.Mike1D.Generic.IQuantity)"]