Mainly used for interaction with variables
1. Get Single Element Text
Obtain the specified element based on the condition and save the text of the element into a variable.

2. Get Email
Set the email login parameters, filter the specified email according to the sender information and email subject, and match the email content according to the extraction rules. The final result can be saved to a variable.
Note: If no sender or subject is set, the latest email will be retrieved.
3. Initiate Network Request
Request headers can be set in the request configuration. A test request can be sent immediately to verify the settings. The result of the request can be matched according to extraction rules and saved to a variable for further use.

4. Text Extraction
Extract text from a variable, filter it according to rules, and then save it to a new variable.

5. Log
Output a log message in the debug log.

6. Write Text
Write the specified content to the target file.
