static int getsum ( int x ) {
  return ( x * ( x + 1 ) ) / 2 ;
}

static int getsum ( int x ) { return ( x * ( x + 1 ) ) / 2 ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (return_statement (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))))) right: (decimal_integer_literal)))))