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This is a drop in replacement for the auth0 java-jwt library (see https://github.com/auth0/java-jwt). This jar makes sure there are no external dependencies (e.g. fasterXml, Apacha Commons) needed. This is useful when deploying to an application server (e.g. tomcat with Alfreso or Pega).

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package com.fasterxml.jackson.databind.deser;

import java.io.IOException;
import java.util.*;

import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.impl.*;
import com.fasterxml.jackson.databind.introspect.AnnotatedMethod;
import com.fasterxml.jackson.databind.util.NameTransformer;
import com.fasterxml.jackson.databind.util.TokenBuffer;

/**
 * Class that handles deserialization using a separate
 * Builder class, which is used for data binding and
 * produces actual deserialized value at the end
 * of data binding.
 *
 * Note on implementation: much of code has been copied from
 * {@link BeanDeserializer}; there may be opportunities to
 * refactor this in future.
 */
public class BuilderBasedDeserializer
    extends BeanDeserializerBase
{
    private static final long serialVersionUID = 1L;

    protected final AnnotatedMethod _buildMethod;
	
    /*
    /**********************************************************
    /* Life-cycle, construction, initialization
    /**********************************************************
     */

    /**
     * Constructor used by {@link BeanDeserializerBuilder}.
     */
    public BuilderBasedDeserializer(BeanDeserializerBuilder builder,
            BeanDescription beanDesc,
            BeanPropertyMap properties, Map backRefs,
            Set ignorableProps, boolean ignoreAllUnknown,
            boolean hasViews)
    {
        super(builder, beanDesc, properties, backRefs,
                ignorableProps, ignoreAllUnknown, hasViews);
        _buildMethod = builder.getBuildMethod();
        // 05-Mar-2012, tatu: Can not really make Object Ids work with builders, not yet anyway
        if (_objectIdReader != null) {
            throw new IllegalArgumentException("Can not use Object Id with Builder-based deserialization (type "
                    +beanDesc.getType()+")");
        }
    }

    /**
     * Copy-constructor that can be used by sub-classes to allow
     * copy-on-write styling copying of settings of an existing instance.
     */
    protected BuilderBasedDeserializer(BuilderBasedDeserializer src)
    {
        this(src, src._ignoreAllUnknown);
    }

    protected BuilderBasedDeserializer(BuilderBasedDeserializer src, boolean ignoreAllUnknown)
    {
        super(src, ignoreAllUnknown);
        _buildMethod = src._buildMethod;
    }
    
    protected BuilderBasedDeserializer(BuilderBasedDeserializer src, NameTransformer unwrapper) {
        super(src, unwrapper);
        _buildMethod = src._buildMethod;
    }

    public BuilderBasedDeserializer(BuilderBasedDeserializer src, ObjectIdReader oir) {
        super(src, oir);
        _buildMethod = src._buildMethod;
    }

    public BuilderBasedDeserializer(BuilderBasedDeserializer src, Set ignorableProps) {
        super(src, ignorableProps);
        _buildMethod = src._buildMethod;
    }

    public BuilderBasedDeserializer(BuilderBasedDeserializer src, BeanPropertyMap props) {
        super(src, props);
        _buildMethod = src._buildMethod;
    }
    
    @Override
    public JsonDeserializer