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Daniel RobertsDaniel Roberts 

Apex Class Library

I am currently working through the "Getting Started with APEX Unit", and the tutorial mentions an "Apex Class Library" where the descriptions of the Salesforce: 
"The EmailManager class has a public method (sendMail()) that sends email and uses built-in Messaging methods of the Apex class library. Also, this class has a private helper method (inspectResults()), which can’t be called externally because it is private but is used only within the class. This helper method inspects the results of the email send call and is called by sendMail()."

I'm wondering where you can find a description of some of these and other methods. i.e. SendMail(), InspectResults(), etc. Any help would be great. 
Hi Daniel,

There is no standard EmailManager class is Salesforce. It is a custom class that Trailhead wants you to create in Apex.

If this answer resolves your query, kindly mark it as Best Answer
Chandan MishraCMChandan MishraCM