static double predict ( double x , double y , double h ) {
  double y1p = y + h * f ( x , y ) ;
  return y1p ;
}

static double predict ( double x , double y , double h ) { double y1p = y + h * f ( x , y ) ; return y1p ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (floating_point_type) name: (identifier)) (formal_parameter type: (floating_point_type) name: (identifier)) (formal_parameter type: (floating_point_type) name: (identifier))) body: (block (local_variable_declaration type: (floating_point_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (binary_expression left: (identifier) right: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))))))) (return_statement (identifier))))