code: def asinh(x):
      """Evaluates the inverse hyperbolic sine of an interval"""
      np = import_module("numpy")
      if isinstance(x, (int, float)):
          return interval(np.arcsinh(x))
      elif isinstance(x, interval):
          start = np.arcsinh(x.start)
          end = np.arcsinh(x.end)
          return interval(start, end, is_valid=x.is_valid)
      else:
          return NotImplementedError
  
imports: from functools import reduce
  from sympy.plotting.intervalmath import interval
  from sympy.external import import_module
label_desc: Use image node_id 20 for calling a global function with example usage: asinh(x) and returns: interval, interval, NotImplementedError