You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: json_path_writer.rs
    path of file: ./repos/tantivy/common/src
    
    the code of the file until where you have to start completion: use crate::replace_in_place;

/// Separates the different segments of a json path.
pub const JSON_PATH_SEGMENT_SEP: u8 = 1u8;
pub const JSON_PATH_SEGMENT_SE
    
    pub fn push(&mut self, segment: &str) {
        let len_path = self.path.len();
        self.indices.push(len_path);
        if !self.path.is_empty() {
            self.path.push_str(JSON_PATH_SEGMENT_SEP_STR);
        }
        self.path.push_str(segment);
        if self.expand_dots {
            // This might include the separation byte, which is ok because it is not a dot.
            let appended_segment = &mut self.path[len_path..];
            // The unsafe below is safe as long as b'.' and JSON_PATH_SEGMENT_SEP are
            // valid single byte ut8 strings.
            // By utf-8 design, they cannot be part of another codepoint.
            unsafe {
                replace_in_place(b'.', JSON_PATH_SEGMENT_SEP, appended_segment.as_bytes_mut())
            };
        }
    }