private IExpression BindExpression()
{
var expression = _context.BindExpression(_methodBodySymbolContext, _diagnostics);
if (!(expression.Type is IInterface)) //TODO: do we want to make this check lazy?
{
_diagnostics.Add(new Diagnostic(new Location(_context), ErrorCode.CannotMixInNonInterface, ImmutableArray.Create <object?>(expression.Type)));
}
return(expression);
}