extension-spring5/src/main/java/com/alibaba/fastjson2/support/spring/http/converter/FastJsonHttpMessageConverter.java [214:237]:
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        private static ResolvableType resolveVariable(TypeVariable<?> typeVariable, ResolvableType contextType) {
            ResolvableType resolvedType;
            if (contextType.hasGenerics()) {
                resolvedType = ResolvableType.forType(typeVariable, contextType);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }

            ResolvableType superType = contextType.getSuperType();
            if (superType != ResolvableType.NONE) {
                resolvedType = resolveVariable(typeVariable, superType);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }
            for (ResolvableType ifc : contextType.getInterfaces()) {
                resolvedType = resolveVariable(typeVariable, ifc);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }
            return ResolvableType.NONE;
        }
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extension-spring6/src/main/java/com/alibaba/fastjson2/support/spring6/http/converter/FastJsonHttpMessageConverter.java [215:238]:
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        private static ResolvableType resolveVariable(TypeVariable<?> typeVariable, ResolvableType contextType) {
            ResolvableType resolvedType;
            if (contextType.hasGenerics()) {
                resolvedType = ResolvableType.forType(typeVariable, contextType);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }

            ResolvableType superType = contextType.getSuperType();
            if (superType != ResolvableType.NONE) {
                resolvedType = resolveVariable(typeVariable, superType);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }
            for (ResolvableType ifc : contextType.getInterfaces()) {
                resolvedType = resolveVariable(typeVariable, ifc);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }
            return ResolvableType.NONE;
        }
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fastjson1-compatible/src/main/java/com/alibaba/fastjson/support/spring/FastJsonHttpMessageConverter.java [254:277]:
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        private static ResolvableType resolveVariable(TypeVariable<?> typeVariable, ResolvableType contextType) {
            ResolvableType resolvedType;
            if (contextType.hasGenerics()) {
                resolvedType = ResolvableType.forType(typeVariable, contextType);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }

            ResolvableType superType = contextType.getSuperType();
            if (superType != ResolvableType.NONE) {
                resolvedType = resolveVariable(typeVariable, superType);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }
            for (ResolvableType ifc : contextType.getInterfaces()) {
                resolvedType = resolveVariable(typeVariable, ifc);
                if (resolvedType.resolve() != null) {
                    return resolvedType;
                }
            }
            return ResolvableType.NONE;
        }
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