QueryKey (MPS.Core (JetBrains MPS 2019.1.0))

All Known Implementing Classes:

QueryKeyImpl
```
public interface QueryKey
```
Identity of a query to replace SNode argument in GeneratorQueryProvider methods. SNode is not appropriate for use of GeneratorQueryProvider from generated code. Although it's not a big deal for local/same generator queries, where direct method call is possible, it might come handy if I change generated templates to reuse query instances. Another benefit is that QueryKey would hide implementation detail (like node.getNodeId().toString) from generated code.

Since:

3.4

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  SNodeReference getTemplateNode()

- Method Detail
  - getTemplateNode
```
@Nullable
SNodeReference getTemplateNode()
```
    Returns:
    
    presumably, an identity of a query host handy to identify problems