anchor.diff:  [[eql-fn-startswith]]
   === `startsWith`
   
  -Returns `true` if a source string begins with a provided substring. Matching is
  -case insensitive.
  +Returns `true` if a source string begins with a provided substring.
   
   [%collapsible]
   ====
  
positive.code: [source,eql]
  ----
  startsWith("regsvr32.exe", "regsvr32")  // returns true
  startsWith("regsvr32.exe", "RegSvr32")  // returns true
  startsWith("regsvr32.exe", "explorer")  // returns false
  startsWith("", "")                      // returns true
  
  
negative.code: [source,eql]
  ----
  endsWith("regsvr32.exe", ".exe")          // returns true
  endsWith("regsvr32.exe", ".dll")          // returns false
  endsWith("", "")                          // returns true
  
  