<simpleType name="otherMimeTypeType">
  <annotation>
    <documentation>Pattern for custom MIME types starting with "Other:" followed by type/subtype format</documentation>
  </annotation>
  <restriction base="string">
    <pattern value="Other: [a-z\-\+\.]+/[a-z0-9\-\+\.]+">
      <annotation>
        <documentation>Pattern matches "Other: " followed by: - type: lowercase letters, hyphens, plus signs, dots - forward slash - subtype: lowercase letters, numbers, hyphens, plus signs, dots</documentation>
      </annotation>
    </pattern>
  </restriction>
</simpleType>