SvgDownloader 0.3.0 API

All Implemented Interfaces:
```
public final class SvgDownloader

                    
```
Downloads icon SVG files from CDN with local caching, validation, and retry logic.
Supports multiple icon libraries through the IconConfig interface.
Features:
- Content validation (type, size, structure)
- 7-day cache with metadata tracking
- HTTPS enforcement for security
- Automatic retry with exponential backoff

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public final class`	`SvgDownloader.CacheStats`

Field Summary

Fields
Modifier and Type	Field	Description
`public final static Integer`	`MAX_CONNECTIONS_COUNT`
`public final static Integer`	`MAX_CONNECTIONS_PER_ROUTE`

Constructor Summary

Constructors
Constructor	Description
`SvgDownloader(String cacheDirectory, Boolean cacheEnabled, Integer maxRetries, Long retryDelayMs, Function1<String, Unit> logger)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final String`	`downloadSvg(String iconName, IconConfig config)`	Download an SVG file for the given icon and configuration with automatic retry logic.
`final Unit`	`cleanup()`
`final Boolean`	`isCached(String cacheKey)`	Check if an SVG is cached and valid
`final SvgDownloader.CacheStats`	`getCacheStats()`	Get cache statistics

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SvgDownloader
```
SvgDownloader(String cacheDirectory, Boolean cacheEnabled, Integer maxRetries, Long retryDelayMs, Function1<String, Unit> logger)
```
- Method Detail
  - downloadSvg
```
 final String downloadSvg(String iconName, IconConfig config)
```
    Download an SVG file for the given icon and configuration with automatic retry logic.
    This method:
    Checks the local cache first
    Downloads from CDN if not cached (with retries on failure)
    Validates content type, size, and structure
    Caches valid content for future use
    Retry Strategy:
    Exponential backoff: delay doubles after each retry
    Configurable max retries (default: 3)
    Configurable initial delay (default: 1000ms)
    Parameters:
    
    iconName - Name of the icon
    
    config - Icon library configuration
    
    Returns:
    
    SVG content as string, or null if download fails after all retries
  - cleanup
```
 final Unit cleanup()
```
  - isCached
```
 final Boolean isCached(String cacheKey)
```
    Check if an SVG is cached and valid
  - getCacheStats
```
 final SvgDownloader.CacheStats getCacheStats()
```
    Get cache statistics