class_docstr: Subplots figure specification.
  
  See: `gggrid()`
docstr_tok: []
code: def __add__(self, other):
      """ """
  
      if isinstance(other, DummySpec):
          # nothing
          return self
  
      elif isinstance(other, FeatureSpecArray):
          supplots = SupPlotsSpec.duplicate(self)
          for spec in other.elements():
              supplots = supplots.__add__(spec)
          return supplots
  
      elif isinstance(other, FeatureSpec) and other.kind in [
          "ggsize",
          "theme",
      ]:
          supplots = SupPlotsSpec.duplicate(self)
          # ToDo: duplication!
          if other.kind == "theme":
              new_theme_options = {
                  k: v
                  for k, v in other.props().items()
                  if v is not None
              }
              if "name" in new_theme_options:
                  # keep the previously specified flavor
                  if (
                      supplots.props()
                      .get("theme", {})
                      .get("flavor", None)
                      is not None
                  ):
                      new_theme_options.update(
                          {
                              "flavor": supplots.props()["theme"][
                                  "flavor"
                              ]
                          }
                      )
  
                  # pre-configured theme overrides existing theme altogether.
                  supplots.props()["theme"] = new_theme_options
              else:
                  # merge themes
                  old_theme_options = supplots.props().get("theme", {})
                  supplots.props()["theme"] = _theme_dicts_merge(
                      old_theme_options, new_theme_options
                  )
  
              return supplots
  
          # add feature to properties
          supplots.props()[other.kind] = other
          return supplots
  
      return super().__add__(other)
  
imports: from typing import Dict
  from lets_plot.plot.core import DummySpec
  from lets_plot.plot.core import FeatureSpec
  from lets_plot.plot.core import FeatureSpecArray
  from lets_plot.plot.core import _specs_to_dict
  from lets_plot.plot.core import _theme_dicts_merge
  from lets_plot.plot.core import _to_svg, _to_html, _export_as_raster
label_desc: Use image node_id 3 for calling the SupPlotsSpec obj's underlying member method code with example usage: obj.__add__(other) and returns: super, self, supplots, supplots, supplots