added support for txsToken with contract address too

Author: abhaygupta1999

src/main/java/io/api/etherscan/core/IAccountApi.java

@@ -110,6 +110,25 @@ public interface IAccountApi {
     @NotNull
     List<TxToken> txsToken(String address) throws ApiException;
 
+    /**
+     * All ERC-20 token txs for given address and contract address
+     *
+     * @param address    get txs for
+     * @param contractAddress contract address to get txs for
+     * @param startBlock tx from this blockNumber
+     * @param endBlock   tx to this blockNumber
+     * @return txs for address
+     * @throws ApiException parent exception class
+     */
+    @NotNull
+    List<TxToken> txsToken(String address, String contractAddress, long startBlock, long endBlock) throws ApiException;
+
+    @NotNull
+    List<TxToken> txsToken(String address, String contractAddress, long startBlock) throws ApiException;
+
+    @NotNull
+    List<TxToken> txsToken(String address, String contractAddress) throws ApiException;
+
     /**
      * All ERC-721 (NFT) token txs for given address
      *

src/main/java/io/api/etherscan/core/impl/AccountApiProvider.java

@@ -230,6 +230,32 @@ public List<TxToken> txsToken(final String address, final long startBlock, final
         return getRequestUsingOffset(urlParams, TxTokenResponseTO.class);
     }
 
+    @NotNull
+    @Override
+    public List<TxToken> txsToken(final String address, final String contractAddress) throws ApiException {
+        return txsToken(address, contractAddress, MIN_START_BLOCK);
+    }
+
+    @NotNull
+    @Override
+    public List<TxToken> txsToken(final String address, final String contractAddress, final long startBlock) throws ApiException {
+        return txsToken(address, contractAddress, startBlock, MAX_END_BLOCK);
+    }
+
+    @NotNull
+    @Override
+    public List<TxToken> txsToken(final String address, final String contractAddress, final long startBlock, final long endBlock) throws ApiException {
+        BasicUtils.validateAddress(address);
+        final BlockParam blocks = BasicUtils.compensateBlocks(startBlock, endBlock);
+
+        final String offsetParam = PAGE_PARAM + "%s" + OFFSET_PARAM + OFFSET_MAX;
+        final String blockParam = START_BLOCK_PARAM + blocks.start() + END_BLOCK_PARAM + blocks.end();
+        final String urlParams = ACT_TX_TOKEN_ACTION + offsetParam + ADDRESS_PARAM + address
+                + CONTRACT_PARAM + contractAddress + blockParam + SORT_ASC_PARAM;
+
+        return getRequestUsingOffset(urlParams, TxTokenResponseTO.class);
+    }
+
     @NotNull
     @Override
     public List<TxToken> txsNftToken(String address) throws ApiException {