Question: Write an arrow function named toggleCase that accepts a string with both lower and upper case letters, and returns a string with the cases reversed:

Write an arrow function named toggleCase that accepts a string with both lower and upper case letters, and returns a string with the cases reversed:

toggleCase('AaBbc') returns "aAbBC"

toggleCase('AoXoMoXoA') returns "aOxOmOxOa"

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