default TraceObjectSchema getChildSchema(String key) {
		SchemaName name = getChildSchemaName(key);
		return getContext().getSchema(name);
	}
Get the schema for a child having the given key

<p>
This is the preferred method for navigating a schema and computing the expected type of a
child.

@param key the key
@return the schema
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/model/target/schema/TraceObjectSchema.java