LiteralMeta 

Metadata annotations in which the object is a literal value. If the @content attribute is used, 
then the element should contain no children.

Complex Type Information

Model

ANY element from ANY namespace

Attributes

QName Type Fixed Default Use Inheritable Annotation
content xs:string optional
datatype xs:QName optional
property xs:QName required
xml:base xs:anyURI optional 
See http://www.w3.org/TR/xmlbase/ for
information about this attribute.
Wildcard: ANY attribute from ANY namespace

Source 

<xs:complexType name="LiteralMeta" mixed="true" abstract="false">
  <xs:annotation>
    <xs:documentation>Metadata annotations in which the object is a literal value. If the @content attribute is used, then the element should contain no children.</xs:documentation>
  </xs:annotation>
  <xs:complexContent mixed="true">
    <xs:extension base="Meta">
      <xs:sequence>
        <xs:any minOccurs="0" maxOccurs="unbounded"/>
      </xs:sequence>
      <xs:attribute name="property" type="xs:QName" use="required"/>
      <xs:attribute name="datatype" type="xs:QName" use="optional"/>
      <xs:attribute name="content" type="xs:string"/>
    </xs:extension>
  </xs:complexContent>
</xs:complexType>