private Func <object, object> CompileResolverExpression(ParameterExpression entityParam, Expression body)
{
// check if body is a MapTo func - return the source entity, mapping will be handled by the caller
var methCall = body as MethodCallExpression;
var usesFromMapFunc = methCall != null && methCall.Method.DeclaringType == typeof(GraphQLModule) &&
methCall.Method.Name == nameof(GraphQLModule.FromMap);
if (usesFromMapFunc)
{
body = methCall.Arguments[0];
}
return(ExpressionHelper.CompileResolverExpression(entityParam, body));
}