shallowTextConfiguration top-level property
Render a node on multiple lines omitting children.
Example:
<name>: <description>   <property1>   <property2>   <propertyN>
See also:
Implementation
final TextTreeConfiguration shallowTextConfiguration = TextTreeConfiguration(
  prefixLineOne: '',
  prefixLastChildLineOne: '',
  prefixOtherLines: ' ',
  prefixOtherLinesRootNode: '  ',
  propertyPrefixIfChildren: '',
  propertyPrefixNoChildren: '',
  linkCharacter: ' ',
  addBlankLineIfNoChildren: false,
  // Add a colon after the description and before the properties to link the
  // properties to the description line.
  afterDescriptionIfBody: ':',
  isBlankLineBetweenPropertiesAndChildren: false,
  showChildren: false,
);