anchor.diff:  [source,console]
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   GET /_index_template
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positive.code: `composed_of`::
  (Optional, array of strings)
  An ordered list of component template names. Component templates are merged in the order
  specified, meaning that the last component template specified has the highest precedence. See 
  <<multiple-component-templates,Composing multiple component templates>> for an example.
  
  `priority`::
  
negative.code: 
  In this case, an index matching `t*` will have three primary shards. If the order of composed
  templates were reversed, the index would have two primary shards.
  
  Mapping definitions are merged recursively, which means that later mapping components can
  introduce new field mappings and update the mapping configuration. If a field mapping is
  already contained in an earlier component, its definition will be completely overwritten
  by the later one.
  
  This recursive merging strategy applies not only to field mappings, but also root options like
  `dynamic_templates` and `meta`. If an earlier component contains a `dynamic_templates` block,
  then by default new `dynamic_templates` entries are appended onto the end. If an entry already
  exists with the same key, then it is overwritten by the new definition.
  
  [[indices-get-template]]
  === Get index template API [[getting-templates]]
  