equals method
Checks if this string is exactly equal to another string.
Performs a direct string comparison between this string and comparison.
This comparison is case-sensitive.
Returns true if the strings are identical, otherwise returns false.
Example:
'hello'.equals('hello'); // true
'Hello'.equals('hello'); // false (case-sensitive)
'hello'.equals('world'); // false
Implementation
bool equals(String comparison) {
return _equals(this, comparison);
}