<fields>
        <field>
          <name>id</name>
          <required>true</required>
          <version>1.0.0+</version>
          <type>String</type>
          <description>The ID of this phase, e.g., {@code generate-sources}.</description>
        </field>
        <field xml.attribute="true">
          <name>executionPoint</name>
          <required>false</required>
          <version>2.0.0+</version>
          <type>String</type>

## Required query parameters { #required-query-parameters }

When you declare a default value for non-path parameters (for now, we have only seen query parameters), then it is not required.

If you don't want to add a specific value but just make it optional, set the default as `None`.

But when you want to make a query parameter required, you can just not declare any default value:

 * you may not use this file except in compliance with the License.
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 * you may not use this file except in compliance with the License.
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 * Unless required by applicable law or agreed to in writing, software
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 * you may not use this file except in compliance with the License.
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 * Unless required by applicable law or agreed to in writing, software
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,

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 * Unless required by applicable law or agreed to in writing, software
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