Function indent_by 

pub fn indent_by<'a, S>(number_of_spaces: usize, input: S) -> String
where
    S: Into<Cow<'a, str>>,

Indents every line that is not empty by the given number of spaces, starting from the second line.

The first line of the string is not indented so that it can be placed after an introduction sequence that has already begun the line.

Examples

assert_eq!(format!("  items: {}", indent::indent_by(2, "[\n  foo,\n  bar,\n]\n")),
"  items: [
    foo,
    bar,
  ]
")

For the version that also indents the first line, see indent_all_by.