modular-avatar/Editor/Inspector/Parameters/ParameterConfigDrawer.uxml

<ui:UXML
        xmlns:ui="UnityEngine.UIElements" 
        xmlns:engine="UnityEditor.UIElements"
        xmlns:ma="nadena.dev.modular_avatar.core.editor" 
        editor-extension-mode="False"
>
    <ui:VisualElement name="MiniDisplay">
        <ui:Label text="merge_parameter.ui.defaultValue" class="ndmf-tr"/>
        <ma:DefaultValueField/>
        <ui:Label text="merge_parameter.ui.saved" class="ndmf-tr"/>
        <ui:Toggle binding-path="saved"/>
    </ui:VisualElement>
    
    <ui:Foldout name="ParameterConfigRoot" text="(placeholder)" value="false">
        <engine:PropertyField binding-path="nameOrPrefix" label="merge_parameter.ui.name" name="f-name" class="ndmf-tr ParameterConfig__isPrefix_falseOnly" />
        <engine:PropertyField binding-path="nameOrPrefix" label="merge_parameter.ui.prefix" name="f-prefix" class="ndmf-tr ParameterConfig__isPrefix_trueOnly" />
        <engine:PropertyField binding-path="remapTo" label="merge_parameter.ui.remapTo" name="remapTo" class="ndmf-tr" />
        <ui:TextField label="merge_parameter.ui.remapTo" text="merge_parameter.ui.remapTo.automatic" name="remapToPlaceholder" enabled="false" class="ndmf-tr unity-base-field__aligned" />

        <!-- this field is not visible until it's moved into the PropertyField below -->
        <ma:DefaultValueField 
                name="innerDefaultValueField"
                class="unity-base-field__input unity-property-field__input"
        /> 
        
        <engine:PropertyField binding-path="defaultValue" name="defaultValueProp" label="merge_parameter.ui.defaultValue" class="ndmf-tr ParameterConfig__isPrefix_falseOnly">
            
        </engine:PropertyField>
        
        <engine:PropertyField binding-path="saved" label="merge_parameter.ui.saved" class="ndmf-tr ParameterConfig__isPrefix_falseOnly" />
        
        <ui:Foldout text="merge_parameter.ui.details" class="ndmf-tr" value="false">
            <engine:PropertyField binding-path="internalParameter" label="merge_parameter.ui.internalParameter" name="internalParameter" class="ndmf-tr" />
            <engine:PropertyField binding-path="isPrefix" label="merge_parameter.ui.isPrefix" name="isPrefix" class="ndmf-tr" />
            <engine:PropertyField binding-path="syncType" label="merge_parameter.ui.syncType" class="ParameterConfig__isPrefix_falseOnly ndmf-tr" />
            <engine:PropertyField binding-path="localOnly" label="merge_parameter.ui.localOnly" class="ParameterConfig__isPrefix_falseOnly ndmf-tr" />    
        </ui:Foldout>
        
    </ui:Foldout>

</ui:UXML>