package com.easypost.model;

public class TrackingLocation {
    String city;
    String state;
    String country;
    String zip;

    public String getCity() { return city; }
    public void setCity(String city) { this.city = city; }

    public String getState() { return state; }
    public void setState(String state) { this.state = state; }

    public String getCountry() { return country; }
    public void setCountry(String country) { this.country = country; }

    public String getZip() { return zip; }
    public void setZip(String zip) { this.zip = zip; }

}
package com.easypost.model;

public class TrackingLocation {
    String city;
    String state;
    String country;
    String zip;

    public String getCity() { return city; }
    public void setCity(String city) { this.city = city; }

    public String getState() { return state; }
    public void setState(String state) { this.state = state; }

    public String getCountry() { return country; }
    public void setCountry(String country) { this.country = country; }

    public String getZip() { return zip; }
    public void setZip(String zip) { this.zip = zip; }

}

Update TrackingLocation.java