class_docstr: Base class for all normalization operation.
  
  This class standardizes how normalization is specified using the
  ranges and keys parameter. The ranges parameter is designed to be
  very flexible, allowing a concise description for simple
  normalization while allowing complex key- and element- specific
  normalization to also be specified.
class_docstr_tok: ["Base","class","for","all","normalization","operation",".","This","class","standardizes","how","normalization","is","specified","using","the","ranges","and","keys","parameter",".","The","ranges","parameter","is","designed","to","be","very","flexible",",","allowing","a","concise","description","for","simple","normalization","while","allowing","complex","key-","and","element-","specific","normalization","to","also","be","specified","."]
code: def _process(self, view, key=None):
      raise NotImplementedError("Normalization not implemented")
  
file_path: holoviews/holoviews/operation/normalization.py
imports: import param
  from ..core import Overlay
  from ..core.operation import Operation
  from ..core.util import match_spec
  from ..element import Raster
label_desc: Use image node_id 4 for calling the Normalization obj's underlying member method code with example usage: obj._process(view, key) without return types