class MPU6050 has no member named begin

hi all,

as working out scripts wich me make winddirection meter gy-87 calibrate compass sensor on board.
i using script "hmc5883l_calibrate_mpu6050" korneliusz jarzebski.
i fault "class mpu6050 has no member named begin"

/*
  calibrate hmc5883l + mpu6050 (gy-86 / gy-87). output hmc5883l_calibrate_processing.pde
  read more: http://www.jarzebski.pl/arduino/czujniki-i-sensory/3-osiowy-magnetometr-hmc5883l.html
  git: https://github.com/jarzebski/arduino-hmc5883l
  web: http://www.jarzebski.pl
  (c) 2014 korneliusz jarzebski
*/

#include <wire.h>
#include <hmc5883l.h>
#include <mpu6050.h>

hmc5883l compass;
mpu6050 mpu;

int minx = 0;
int maxx = 0;
int miny = 0;
int maxy = 0;
int offx = 0;
int offy = 0;

void setup()
{
  serial.begin(9600);

  // initialize mpu6050
  while(!mpu.begin(mpu6050_scale_2000dps, mpu6050_range_2g))
  {
    delay(500);
  }
how slove error?
any apreciated.
kind regards,
ilioss

what compiler complaining fact there no method named .begin() in class "mpu6050" defined in mpu6050.h.

i take @ this mpu6050.h file in github. if it's same .h using, correct method call .initialize() think. there no method in file named .begin().

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