cfengine search and replace string

replace_with_content.cf

bundle edit_line replace_with_content(regex,content) {
replace_patterns:
    "^($(regex))$"
        replace_with => content("$(content)"),
        comment => "Search and replace string";
}       


body replace_with content(c) {
    replace_value => "$(c)"; 
    occurrences => "all";
}