class_docstr: An ArrayList is a strongly typed list whose type can be anything that can
  be interpreted as a numpy data type.
docstr: Number of base elements, in memory.
docstr_tok: ["Number","of","base","elements",",","in","memory","."]
code: def size(self):
      """Number of base elements, in memory."""
      return self._size
  
file_path: vispy/vispy/visuals/collections/array_list.py
imports: import numpy
label_desc: Use image node_id 3 for calling the ArrayList obj's underlying member method code with example usage: obj.size() and returns: self