static double f ( double t ) {
  return t * a + Math . sin ( t * c * Math . PI ) * b ;
}

static double f ( double t ) { return t * a + Math . sin ( t * c * Math . PI ) * b ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (floating_point_type) name: (identifier))) body: (block (return_statement (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (binary_expression left: (identifier) right: (identifier)) right: (field_access object: (identifier) field: (identifier))))) right: (identifier))))))