This question runs in a pre-configured Salesforce environment - no personal connection required.
Fetch a user from DummyJSON by id and return a map with id, firstName, and lastName fields. Return null for null input. Endpoint: https://dummyjson.com/users/{id}
Examples:
Input: userId = 1
Output: {id=1, firstName='John', lastName='Doe', email='john@example.com'}
Explanation: Returns user data for ID 1 with selected fields
Input: userId = 5
Output: {id=5, firstName='Jane', lastName='Smith', email='jane@example.com'}
Explanation: Returns user data for ID 5 with selected fields
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