code: def sixhumpcamel(p):
      """
      带域的 2dim 的多模态全局最小化函数
      -5<=xi<=5,
      f(-0.08..., 0.712...) 的全局最小值为 -1.0...4
      """
      x, y = p
      return (
          4 * np.square(x)
          + x * y
          - 4 * np.square(y)
          - 2.1 * np.power(x, 4)
          + 4 * np.power(y, 4)
          + 1 / 3 * np.power(x, 6)
      )
  
file_path: scikit-opt/sko/demo_func.py
imports: import numpy
  from scipy import spatial
label_desc: Use image node_id 8 for calling a global function with example usage: sixhumpcamel(p) and returns: unknown