Adafruit_MAX31855_Info get_info(void);
 ^

Adafruit_MAX31855_Info get_info(uint8_t ch);

 ^

#ifndef KTA259V3_H
#define KTA259V3_H

#if ARDUINO >= 100
  #include <Arduino.h>
#else
  #include <wiring.h>
  #include "pins_arduino.h"
#endif

#include <SPI.h>
#include "Adafruit_MAX31855.h"

// Time to wait in milliseconds for signal to settle after switching channels on MUX
#define KTA259V3_MUX_WAIT 250

// Pins for ADG608R Multiplexer
#define KTA259V3_PIN_A0 4
#define KTA259V3_PIN_A1 5
#define KTA259V3_PIN_A2 6
#define KTA259V3_PIN_EN 7

class KTA259V3 : public Adafruit_MAX31855 {
  private:
    uint8_t samples;

  public:
    /** Constructor */
    KTA259V3(uint8_t pin);

    /** Set amount of oversampling **/
    void set_oversampling(uint16_t samples);

    /** Select channel on MUX, use numbers 1 to 8 (not 0 to 7).
      * PCB is has channels 1 to 8 marked on it. User must wait
      * for signal to settle before reading it.
      */
    void select_channel(uint8_t ch);

    /** Calls update() on parent class */
    void update(void);

    /** Selects channel, waits KTA259V3_MUX_WAIT, then updates _info */
    void update(uint8_t ch);

    /** Returns _info structure from last update */
    Adafruit_MAX31855_Info get_info(void);

    /** Selects channel and update, then return _info structure */
    Adafruit_MAX31855_Info get_info(uint8_t ch);
};

#endif