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   A literal string is a specification of a string value. 
   Description 
   A literal string contains a String-valued attribute. 
   Generalizations 
   • 
            “LiteralSpecification? on page 61 
            
   Attributes 
   •	value: String	    The specified String	    value. 
   Associations 
   No additional associations 
   Constraints 
   No additional constraints 
   Additional Operations 
   [1]  	The query isComputable() is redefined to be true. 
   LiteralString::isComputable(): Boolean;isComputable = true
   [2] The query stringValue() gives the value. 
   LiteralString::stringValue() : [String];stringValue = value
   Semantics 
   A LiteralString	    specifies a constant String	    value. 
   Notation 
   A LiteralString	    is shown as a sequence of characters within double quotes. 
   The character set used is unspecified.