def validate(self):
if not self.start:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>if not self.end:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>if self.end < self.start:<EOL><INDENT>raise ValueError("<STR_LIT>")<EOL><DEDENT>if self.reminder_minutes_before_start and not isinstance(self.reminder_minutes_before_start, int):<EOL><INDENT>raise TypeError("<STR_LIT>")<EOL><DEDENT>if self.is_all_day and not isinstance(self.is_all_day, bool):<EOL><INDENT>raise TypeError("<STR_LIT>")<EOL><DEDENT>
Validates that all required fields are present