public interface IProxyProvider| GetProxy | Get a proxy for generic/global data |
| GetProxy(EngineNode) | Get a proxy for the node |
| GetProxy(EngineReach) | Get a proxy for the reach, covering a number of gridpoints |
| GetProxy(EngineReach, Int32) | Get a proxy for the gridpoint in the reach |
| GetProxyReachGeneric | Get a proxy for the reach, generic data (not gridpoint associated) |