GoFunctionDeclaration func =
childAt(0, file.getFunctions());
GoBlockStatement blockStmt = get(func.getBlock());
GoReturnStatement returnStmt =
castAs(GoReturnStatement.class, 0, blockStmt.getStatements());
assertNotNull(
castAs(GoLiteralExpression.class, 0, returnStmt.getExpressions()));
assertNotNull(
castAs(GoLiteralExpression.class, 1, returnStmt.getExpressions()));
}