static double area_of_triangle ( Point a , Point b ) {
  return abs ( crossProduct ( a , b ) ) / 2.0 ;
}

static double area_of_triangle ( Point a , Point b ) { return abs ( crossProduct ( a , b ) ) / 2.0 ; }
(method_declaration (modifiers) type: (floating_point_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier)) (formal_parameter type: (type_identifier) name: (identifier))) body: (block (return_statement (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))))) right: (decimal_floating_point_literal)))))