void set_position (float x, bool link_call = false);
void set_position (float x, float y, bool link_call = false);
void set_position (float x, float y, float z, bool link_call = false);
void set_position (float x, bool link_call = false);
void set_position (float x, float y, bool link_call = false);
void set_position (float x, float y, float z, bool link_call = false);