renamed get claim method

Author: BastiaanJansen

README.md

@@ -208,7 +208,7 @@ Date exp = payload.getExpirationTime();
 Date nbf = payload.getNotBefore();
 String[] audience = payload.getAudience();
 
-Object customClaim = payload.get("username");
+Object customClaim = payload.getClaim("username");
 
 boolean hasClaim = payload.containsClaim("key");
 ```

src/main/java/com/bastiaanjansen/jwt/Header.java

@@ -70,7 +70,7 @@ public String base64Encoded() {
         return Base64Utils.encodeBase64URL(new JSONObject(claims).toString());
     }
 
-    public Object get(String name) {
+    public Object getClaim(String name) {
         return claims.get(name);
     }
 

src/main/java/com/bastiaanjansen/jwt/Payload.java

@@ -123,7 +123,7 @@ public void addClaim(String name, Object value) {
         claims.put(name, value);
     }
 
-    public Object get(String name) {
+    public Object getClaim(String name) {
         return claims.get(name);
     }
 

src/test/java/com/bastiaanjansen/jwt/JWTTest.java

@@ -8,7 +8,6 @@
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.function.Executable;
 
-import java.time.Instant;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.Map;
@@ -131,15 +130,15 @@ void builder_withClaim() throws JWTCreationException {
         JWT jwt = new JWT.Builder(algorithm).withClaim("custom-claim", "custom-claim-value").build();
         String expected = "custom-claim-value";
 
-        assertThat(jwt.getPayload().get("custom-claim"), is(expected));
+        assertThat(jwt.getPayload().getClaim("custom-claim"), is(expected));
     }
 
     @Test
     void builder_withHeader() throws JWTCreationException {
         JWT jwt = new JWT.Builder(algorithm).withHeader("custom-header", "custom-header-value").build();
         String expected = "custom-header-value";
 
-        assertThat(jwt.getHeader().get("custom-header"), is(expected));
+        assertThat(jwt.getHeader().getClaim("custom-header"), is(expected));
     }
 
     @Test