| Index: third_party/mojo/src/mojo/public/tools/bindings/generators/python_templates/module_macros.tmpl
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| diff --git a/third_party/mojo/src/mojo/public/tools/bindings/generators/python_templates/module_macros.tmpl b/third_party/mojo/src/mojo/public/tools/bindings/generators/python_templates/module_macros.tmpl
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| index 21c70db3038ed615f53482f0dd94e90ae99b628a..c979f59434ba74a58c054c44f5dc602af0e6ddca 100644
 | 
| --- a/third_party/mojo/src/mojo/public/tools/bindings/generators/python_templates/module_macros.tmpl
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| +++ b/third_party/mojo/src/mojo/public/tools/bindings/generators/python_templates/module_macros.tmpl
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| @@ -37,3 +37,13 @@
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|  {% endif %}
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|  }
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|  {%- endmacro -%}
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| +
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| +{%- macro union_descriptor(union) -%}
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| +{
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| +  'fields': [
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| +{% for field in union.fields %}
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| +    {{field|union_field_descriptor}},
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| +{% endfor %}
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| +  ],
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| + }
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| +{%- endmacro -%}
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| 
 |