duplicate types in ctakes types system?

[Dligach, Dmitriy]

Dear cTAKES developers,

Does anybody know why quite a few types are defined multiple times in 
TypeSystem.xml?

E.g. I see this at line 576:

    <typeDescription>
      <name>org.apache.ctakes.typesystem.type.refsem.LabReferenceRange</name>
      <description>Holds a narrative (i.e. string) reference range</description>
      
<supertypeName>org.apache.ctakes.typesystem.type.refsem.Attribute</supertypeName>
      <features>
        <featureDescription>
          <name>value</name>
          <description/>
          <rangeTypeName>uima.cas.String</rangeTypeName>
        </featureDescription>
      </features>
    </typeDescription>
    <typeDescription>

And then I see this at line 2165:

    <typeDescription>
      <name>org.apache.ctakes.typesystem.type.refsem.LabReferenceRange</name>
      <description>Holds a narrative (i.e. string) reference range</description>
      
<supertypeName>org.apache.ctakes.typesystem.type.refsem.Attribute</supertypeName>
      <features>
        <featureDescription>
          <name>value</name>
          <description/>
          <rangeTypeName>uima.cas.String</rangeTypeName>
        </featureDescription>
      </features>
    </typeDescription>
    <typeDescription>

Thank you in advance,

Dima