Function text_to_key_value_map 

pub fn text_to_key_value_map(
    text: &str,
) -> Result<HashMap<Box<str>, Box<str>>, Error>

Parses a string containing key-value pairs into a hash map.

Each non-empty line of the text should contain a key-value pair separated by whitespace. The first whitespace character on each line separates the key from the value.

Format Rules

• Keys cannot contain whitespace
• Values can contain any characters (leading/trailing whitespace is trimmed)
• Empty lines and lines without whitespace are ignored
• Keys must be unique (duplicate keys result in an error)

Errors

Returns Error::MultipleKeys if a duplicate key is found.