List of OCL Methods
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      .namespacePrefix()

      Description of the method
      Description:

      .namespacePrefix() can be used to check if the file uses namespace prefixes. It returns the prefix for the given namespace and empty if no prefix is found to be used. 
      Available for:

      any element
      Parameters: namespace
      Return type: string

      Example 1

      Context: Message
      OCL: self.namespacePrefix("http://www.XMLdation.com") = "ns1"
      Description: The example rule checks if the prefix for the given namespace is "ns1"                       

       

      The XML snippet below would pass this check.

      <?xml version="1.0" encoding="UTF-8"?>

      <Message xmlns:ns1="http://www.XMLdation.com"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http::xmldation.com extensions.xsd "> 

      The other snippet below however would not pass this check as the method returns empty string ("").

      <?xml version="1.0" encoding="UTF-8"?>

      <Message xmlns="http://www.XMLdation.com"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http::xmldation.com extensions.xsd ">